Detachable heel-calk for composite rubber-pad horseshoe.



No. 817,583. PATENTED APR.10, 1906. T. W. J. MCGANN. DETACHABLE HEEL OALK FOR COMPOSITE RUBBER PAD HORSESHOES.

APPLICATION FILED DEG. 26,1905.

E mun. Willa 7' I WITNESSES: //v VENTOH THOMASW. J. M 6AM N v I y A TTOHNE Y8 UNITED STATES PATENT OFFICE.

THOMAS W. J. MoGANN, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR OF ONE-HALF TO AENEAS COLLINS, OF WASHINGTON,

DISTRICT OF COLUMBIA.

Specification of Letters Patent.

Patented April 10, 1906.

Application filed December 26, 1905. Serial No. 293,259-

To all whom it may concern.

Be it known that I, THOMAS W. J. MoGANN, a citizen of the United States, residing at Washington city, in the District of Columbia, have invented a new and useful Improvement in Detachable Heel Calks for Composite Rubber-Pad Horseshoes, of which the following is a specification.

My invention is designed to provide a detachable heel-calk applicable to that class of composite horseshoes which are known as three-quarter shoes, which are provided at the heel with a rubber pad.

The object is to render this kind of a shoe rough-shod for slippery roads without having to take off the shoes or send the horse to the blacksmith.

It consists in the novel construction and arrangement of the calk, which I will now proceed to describe with reference to the drawings, in which Figure 1 is an outside face view of a composite metal and rubber-pad shoe with my calk applied. Fig. 2 is a side view of the same. Fig. 3 is a section on line 3 3 of Fig. 1. Fig. 4 is a partial side view showing a slight modification. Fig. 5 is a cross-section, and Fig. 6 a detail in perspective, of a supplemental hook-clamp for holding my calk to the shoe more securely.

In the drawings, Srepresents' a horseshoe, which, as seen in Fig. 2, is an incomplete or fractional shoe, being only about three-quarters the length of the horses hoof and is provided with a rubber pad P at the heel portion extending behind the rear ends of the shoe and connected to a thinner plate 19, of rubber, leather, leatheroid, or other flexible material which extends over the whole of the bottom of the horses hoof and which is caught and secured between the shoe S and the horse s hoof by means of the nails and by which connection the pad P is held in place. This shoe, it will be seen, is of a composite structure and is already well known.

A is my detachable heel calk, which, as seen in Fig. 1, consists of a plate extending across from heel to heel of the shoe and which is formed with a chisel-shaped calk a. This calk-plate is applied to the outer surface of the rear ends of the shoe and extends beneath the rubber pad P, so that pressure on the chisel-shaped calk a is borne by the pad P face of the shoe on each side is formed with a groove or recess 7, into which the lu s Z of the calk-plate snuglyfit. The calk-p ate A is formed on each side with a flat plate a a, which extends some distance inside the shoeheels. These plates are perforated with boltholes to receive bolts B B. These bolts have thin heads which overlap the inner edges of the shoe and lie between the shoe and the flexible pad-plate p, as seen in Fig. 3. The outer ends of the bolts are provided with nuts I) I), screwed up tight against the plates (1 a. These bolts may have the heads on the inside and the nuts on the outside, as shown, or the nuts may be inside and the heads outside. In either case they hold the calk-plate tightly to the shoe while the interlocking lugs and recesses Z and r prevent all horizontal movement.

As shown in Figs. 1 and 2, the bolts B are in front of the rear ends of the three-quarter shoe and bind against the inner edges of the shoe. In Fig. 4 I have shown how these bolts may be applied directly to the rear ends of the shoe, the heads of the bolts in this case being made wider on one side, so as to secure a greater lap over the upper surface of the shoe. To render the connection of the calk to this form of shoe stronger, I employ a supplemental clamp-hook C. (Shown in detail in Fig. 6.) This is applied to the shoe, as seen in Fig. 5, the hook portion extending outside the shoe with the flange c of the clamp overlapping the upper edge of the shoe and lying between it and the pad-plate p. The position of this hook-clamp is indicated in dotted lines on the left-hand side of Fig. 1, and said clamp is secured by the same bolt B which holds the calkplate. If desired, this clamp may be dispensed with. When my detachable calk is not required, the recesses r in the shoe are designed to be closed with small filling-blocks of steel secured by a set-screw or otherwise.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A detachable heel calk for composite horseshoes, comprising a calk-plate extending across from heel to heel of the metal part of the shoe, interlocking means for preventing horizontal movement of the c'alk-plate on the shoe, two vertical bolts for clamping the calk-plate to the shoe, said calk-plate being extended rearwardly past the rear ends. of the fractional metal part of the shoe and having a calk-lug in rear of the same adapted to rest below the rubber pad of the composite shoe substantially as described.

2. A detachable heel calk for composite horseshoes, comprising a calk-plate extending across from heel to heel of the metal part of the shoe and having on each side a lug ada ted to enter a recess in the metal part of t e composite shoe, two vertical bolts for clamping the calk to the shoe, said calk-plate being extended rearwardly past the rear end of the fractional metal part of the shoe and having a calk-lug in rear of the same'adapted to rest below the rubber pad of the composite shoe substantially as described.

3. A detachable heel calk for composite horseshoes, comprising a calklate extending across from heel to heel of t e metal part of a composite shoe, interlocking means for preventing horizontal movement of the calkelites plate on the shoe, two vertical bolts passing through the calk-plate on the inner sides of the rear ends of the fractional metal part of the shoe, said calk-plate being extended rearwardlypast the rear ends of the fractional metal part of the shoe and having a calk-lug in rear-of the same adapted to rest below the rubber pad of the composite shoe substantially. as described.

4. A detachable heel-calk for a horseshoe, comprising a calk plate extending across from heel to heel, interlocking means for preventing horizontal movement of the calkplate, two vertical: bolts for connecting the calk-plates to the shoe, said bolts being arranged along the inner edges of the shoe, and clamp-plates secured'by these bolts andhav- :ing hooked portions extending along the outer edges of the shoe and over the upper edges of the same substantially as described.

THOMAS J. MOGANN.

Witnesses:

AENEAS COLLINS, SoLoN C. KEMON. 

